Jillian is a distinctive boys' name in United States, ranking #11279 in 2006 with 6 recorded births. This places Jillian in the bottom 20% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2000 with 10 births ranking #6551. In 2006, approximately 1 in every 342,520 boys born was named Jillian. STABLE Recent data shows the name is currently stable.